The sequence of a promoter constitutes the most basic mechanism of transcription regulation because:
A. promoters are always bound by activators.
B. RNA polymerase has differential affinities for different sequences that correlate with the efficiency of transcription.
C. promoters are always bound by repressors.
D. the expression levels of different housekeeping genes are always identical.
B
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During a viticulturist's presentation on growing and managing grapes, why did he state that it is imperative to encourage the grapevine's natural tendency for positive thigmotropism?
A. To encourage the vine's response to move toward the early morning light as opposed to the late afternoon sun. B. To encourage the roots to grow deeper and spread out. C. To encourage the grapes to retain their sugar for a longer period of time. D. To encourage the twining stems to wrap around the supporting wires. E. To discourage early ripening of the fruit. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about plant growth and thigmotropism? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Isotopes of the same element differ from each other in the number of
a. electrons and protons. b. neutrons only. c. protons and neutrons. d. electrons only. e. protons, neutrons, and electrons.
In order to take up a naked DNA molecule, a cell must be ________, which may occur only at certain stages in the life cycle of the organism.
Fill in the blank(s) with the appropriate word(s).
Name three differences between how microbes grow in a closed pure batch system as compared to in nature
What will be an ideal response?